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US 2006/0032735 A1Published application
Rejuvenation of refractory metal products
AssigneeH.C. Starck GmbH
InventorsPaul Aimone, Prabhat Kumar, Peter Jepson, Henning Uhlenhut, Howard Goldberg, Steven Miller
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Abstract
Refractory metal products, such as tantalum, can be rejuvenated after metal consumption in selected zones by filling the zones with powder and simultaneously applying focused radiant energy to the powder.
Claims16
A process for rejuvenating a refractory metal product having one or more consumed surface area portions comprising the steps of:
- a) filling said consumed portions with refractory metal powder particles, said powder being the same composition as said refractory metal product,
- b) simultaneously applying focused radiant energy to said powder in order to melt the powder, thereby causing particle to particle bonding and bonding of the particles to said consumed portions,
- c) discontinuing the filling step a) and the radiant energy applying step b) once said portions have been completely filled, and
- d) profiling the filled portions to the desired final shape.
1 more element
A rejuvenated refractory metal product comprising:
- a) a refractory metal product plate having one or more consumed surface area portions,
- b) a mass of bonded metal powder particles filling said consumed portions, said mass being producing by
- i) filling said consumed portions with refractory metal powder particles, said powder being the same composition as said refractory metal product,
- ii) simultaneously applying focused radiant energy to said powder in order to melt the powder, thereby causing particle to particle bonding and bonding of the particles to said consumed portions,
- iii) discontinuing the filling step a) and the radiant energy applying step b) once said portions have been completely filled, and
- iv) profiling the filled portions to the desired final shape.
3 more elements
Dependencies are inferred from the claim text.